Bently Nevada 330101-00-67-20-02-CN 3300 XL 8 mm Probe Overview

Technical Specifications Breakdown

Key parameters for the 330101-00-67-20-02-CN are listed below for quick reference:

Industry Applications and Failure Mode Prevention

This 8 mm probe is particularly effective in steam turbines, compressors, and pumps where early detection of shaft vibration prevents catastrophic failures. The patented TipLoc molding method provides a robust bond between the probe tip and body, reducing the risk of tip separation in high-vibration environments. The CableLoc design delivers 330 N (75 lbf) pull strength, ensuring cable integrity during installation and operation. By using this probe, maintenance teams can achieve reliable data for predictive maintenance programs, minimizing unplanned downtime.

Installation and Setup Guidance

Proper thread engagement is critical for accurate readings. The probe case thread is 3/8-24 with a maximum thread engagement length of 0.563 in. For standard forward mounted probes, the recommended torque is 11.2 N•m (100 in•lbf) for the probe case, and 7.5 N•m (66 in•lbf) for the first three threads. Ensure field wiring uses 0.2 to 1.5 mm² (16 to 24 AWG) 3-conductor shielded triad cable, with a maximum length of 305 meters (1,000 feet) between the Proximitor Sensor and the monitor. The recommended gap setting for radial vibration is -9 Vdc (approximately 1.27 mm or 50 mils).

Maintenance and Reliability Considerations

The probe's PPS tip and stainless steel case offer durability in harsh environments. The standard probe operates from -52°C to +177°C, with extended temperature range probes available for higher temperatures. Exposing the probe to temperatures below -34°C (-30°F) may cause premature failure of the pressure seal. The probe is designed to seal differential pressure using a Viton® O-ring, but is not pressure tested prior to shipment. For applications requiring pressure seal verification, contact the custom design department. The probe shows less than a 3% change in Average Scale Factor (ASF) when tested in 93% humidity per IEC 68-2-3 for up to 56 days.

Selecting the Right Vibration Probe for Critical Machinery

When monitoring rotating machinery, the choice of proximity probe directly impacts data accuracy and reliability. The Bently Nevada 330101-00-67-20-02-CN is a 3300 XL 8 mm probe designed for demanding industrial environments where precise shaft vibration and position measurements are essential. This model features a 3/8-24 UNF thread configuration, a 2.0 meter cable, and a miniature coaxial ClickLoc connector, making it suitable for a wide range of turbomachinery applications.

Compatibility and Integration

This probe is part of the 3300 XL system and is compatible with standard 3300 XL extension cables and Proximitor sensors. The miniature coaxial ClickLoc connector ensures secure, quick connections. The system provides a standard Incremental Scale Factor of 7.87 V/mm (200 mV/mil) with interchangeability error included, allowing for easy replacement without system recalibration.

Selection Guide and Purchasing Advice

When selecting a vibration probe, consider the machine's operating temperature, thread type, and cable length requirements. Please verify current lifecycle status and availability with AutoDCSTech before ordering. AutoDCSTech offers genuine Bently Nevada parts with expert support to ensure you get the right component for your critical machinery.